Both make one take of up to 30 seconds. Kling 4.0 costs less at 1080p; Seedance 2.5 adds sound and a 480p draft tier. Run one prompt on both.
Updated 2026-11-12
Each prompt below is built to show one difference. Load it, generate, then switch the model in the generator and generate again. The button shows what each run costs.
Tests: A long camera move with no cuts. Watch whether the stalls and the florist stay consistent to the end.
Text to video · 15 s
Prompt: One continuous shot with no cuts: the camera glides through a morning flower market, past stalls of tulips and sunflowers, around a corner and up to a florist wrapping a bouquet
Tests: Speech and lip sync. Seedance 2.5 makes sound with the picture; Kling 4.0 has no sound switch on Imgveo.
Text to video · 5 s
Prompt: Two friends at a café table. The woman leans in and says: "You won't believe what happened today." The man laughs and says: "Try me." Natural voices, café noise in the background
Tests: Quick motion with a moving camera. Look for smeared limbs and a jumpy background.
Text to video · 5 s
Prompt: A street dancer spins and flips on a wet city plaza at night, neon reflections in the puddles, the camera circles around him
Tests: Both makers say camera moves improved. Check how smooth the move is and whether the furniture stays put.
Text to video · 10 s
Prompt: A slow dolly shot moves through a sunlit living room, past a sofa and a bookshelf, toward a window that opens onto the sea
Kling 4.0
Pick it for 1080p finals at a lower price
Seedance 2.5
Pick it for cheap drafts and clips with sound
Both models make one take of up to 30 seconds, so length doesn’t decide it; price and sound do. At 1080p Kling 4.0 costs 43 credits per second and Seedance 2.5 costs 158, which makes Kling 4.0 the cheaper way to a 1080p final. For drafts, Seedance 2.5 at 480p (21 credits per second) is the cheaper way to try an idea, and it makes sound with the picture at no extra cost.
How this page compares: specs and prices come from the generator’s own code, so they match what you are charged. What each model does better comes from Kuaishou’s and ByteDance’s own notes, and we say so wherever we use them. We haven’t scored the models; the test prompts above let you judge with your own eyes.
What each model does in our generator today. A highlighted cell is the stronger side on that line.
| Feature | Kling 4.0 | Seedance 2.5 |
|---|---|---|
| Longest take | Up to 30 seconds | Up to 30 seconds |
| First and last frame | Up to 30 seconds | Up to 30 seconds |
| Resolution | 720p, 1080p | 480p, 720p, 1080p |
| Aspect ratios | 16:9, 9:16, 1:1, 21:9 | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 |
| Sound | No switch, one price | On by default, same price either way |
| Price at 480p | Not offered | 21 credits/s |
| Price at 720p | 29 credits/s | 47 credits/s |
| Price at 1080p | 43 credits/s | 158 credits/s |
Neither model runs in 4K on Imgveo. For 4K, Kling 3.0, Seedance 2.0 and Veo 3.1 have 4K options here.
Both makers raised the single-take limit from 15 to 30 seconds this year, and both describe the extra length in their own way.
Kuaishou’s notes describe up to 10 keyframes per take, so the model passes through set moments on its way to the end. On Imgveo you set the first and last frame today, up to 30 seconds apart.
ByteDance describes 30 seconds in one pass, then rounds of extension that keep the characters, the setting and the pacing, for videos several minutes long. On Imgveo you get the single take, up to 30 seconds with first and last frame too.
On Imgveo both give you one consistent take of up to 30 seconds. Choose by price and sound, and run the long-take test above to see which motion you prefer.
Both models can read far more than one photo. ByteDance says Seedance 2.5 takes up to 30 images, 10 video clips and 10 audio clips in one pass, and can edit sound and picture at set timestamps. Kuaishou says Kling 4.0 reads up to 15 images, clips, elements and voices, and can edit up to 5 clips.
Our generator doesn’t offer those reference stacks yet. On Imgveo both models start from text, one photo, or a first and last frame.
Seedance 2.5 generates sound and picture together, and ByteDance says the two stay in sync. On Imgveo the sound is on by default and the price is the same with it switched off.
Kuaishou says Kling 4.0 renders two-channel sound with sharper lip sync than Kling 3.0. On Imgveo, Kling 4.0 has no sound switch and one price. The dialogue test above is the quickest way to hear both for yourself.
Every number below comes from the same code that charges you, so it changes when our prices do. Failed clips are refunded.
| Clip | Kling 4.0 · 720p | Kling 4.0 · 1080p | Seedance 2.5 · 480p | Seedance 2.5 · 720p | Seedance 2.5 · 1080p |
|---|---|---|---|---|---|
| 5 seconds | 145 | 215 | 105 | 235 | 790 |
| 10 seconds | 290 | 430 | 210 | 470 | 1,580 |
| 15 seconds | 435 | 645 | 315 | 705 | 2,370 |
| 30 seconds | 870 | 1,290 | 630 | 1,410 | 4,740 |
Seedance 2.5 prices include sound. Kling 4.0 has no 480p tier.
The gap grows with resolution. At 720p Seedance 2.5 costs 18 credits per second more than Kling 4.0; at 1080p, 115 more. Below that, Seedance 2.5’s 480p tier (21 credits per second) has no Kling 4.0 match, which makes it the cheaper way here to test a long idea.
Credits come with every plan, and bigger plans make each credit cheaper. See plans
Six common jobs, and the model we would start with for each.
Kling 4.0. At 43 credits per second against 158, a 10-second 1080p clip is 430 credits instead of 1,580.
Seedance 2.5 at 480p, 21 credits per second. Settle the motion cheaply, then render the final on either model.
Seedance 2.5, whose sound is made with the picture at no extra cost. Kling 4.0 has no sound switch on Imgveo.
Kling 4.0 Flash at 17 credits per second: up to 20 seconds from text or a first frame.
Seedance 2.5 offers 6 aspect ratios, including 4:3 and 3:4; Kling 4.0 offers 4.
Run the same prompt on both at 720p for 5 seconds: 145 credits on Kling 4.0, 235 on Seedance 2.5.
Sources: Kuaishou · Kling 4.0 · ByteDance Seed · Seedance 2.5
Same prompt, two models, one page. Generate, switch the model in the generator, and keep the clip you like.
Kling is a trademark of Kuaishou, and Seedance is a trademark of ByteDance. Imgveo is an independent platform and is not affiliated with either company.